ELECTRODE, CATHODE, SECONDARY BATTERY, BATTERY PACK, VEHICLE, AND STATIONARY POWER SOURCE

Japanese Patent JP2023133937

A

To provide an electrode, a secondary cell, a battery pack, a vehicle, and stationary power source that have excellent electrolyte impregnating ability and that is capable of improving low-temperature output characteristics in the secondary cell.SOLUTION: An electrode comprises a collector, and an active material containing layer having an active material 50 and inorganic particles 51 formed on the collector. In fine-pore volume distribution map obtained by measuring the active material layer with a mercury penetration method, the electrode has the maximum peak of fine pore volume (cc/g/μm) in the range of fine pore diameter from 0.007 μm or more and 3 μm or less, a fine-pore surface area within fine-pore diameter of 1 μm or more and 50 μm or less relative to the fine-pore surface area in the entire measurement range being 3% or more and 7% or less, a cumulative fine-pore volume (cc/g) in the fine-pore diameter of 0.01 μm or more and 0.02 μm or less relative to the entire fine-pore volume of the electrode being 0.1% or more and 1% or less, and the cumulative fine-pore volume (cc/g) in the range of fine-pore diameter from 1 μm or more and 50 μm or less relative to the entire fine-pore volume (cc/g) of the electrode being 25% or more and 49% or less.SELECTED DRAWING: Figure 1

KYUSEKI HIROSHI
KANAI YUTA
SASAGAWA TETSUYA

JP2022039208A

September 27, 2023

March 14, 2022

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TOSHIBA CORP

H01M4/13; H01M4/02; H01M4/62; H01M10/0566

Takumi Hara
Shusaku Tsuge
Tohru Konno
Kosuke Takahashi
Hajime Sugiyama
Ryosuke Asano

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